Malicious PDF — malware analysis report

Static analysis result for SHA-256 e561ea9a2cd7ebde…

MALICIOUS

PDF

41.7 KB Created: 2021-05-16 06:11:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: afedce27b82fc32d40072d45d3c20b17 SHA-1: a9eb84aa9e5eef18ec52c778ac2bd9218b8a504b SHA-256: e561ea9a2cd7ebdeca355eb6738545e9a00daaadaf76876e0ebf425f6a1aeb11
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-free-spin-today-2021-game-hack PDF link annotation
    • https://vstarnippers.com/images/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-today_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/no-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://vstarnippers.com/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://vstarnippers.com/images/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://vstarnippers.com/images/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A1C 23680 bytes
SHA-256: 1bf7eb53d56bcb65d62f23dde934ef3cf53e544a9cb5fefd3ee2b774dd69f402
font_01_sfnt_off00007f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6D 18644 bytes
SHA-256: 5d92db92da7874bc6d3fe3c9cb4f688e04248e846dc14a79e6405cdf6baca0cc

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